C / C++ / MFC Discussion Boards

Assign Character Arrays data from an STL Container

valikac4-Dec-01 20:24

4-Dec-01 20:24

Hi.

Let say there is a standard STL vector contain with data in it. How do you assign a character arrays the data inside the vector contain either through value or pointer?

I need to do that so I could write the data to a file in binary mode.

Thanks,
Kuphryn

Re: Assign Character Arrays data from an STL Container

Joaquín M López Muñoz4-Dec-01 20:57

Joaquín M López Muñoz

4-Dec-01 20:57

I'm not sure I've understood your request, but if what you're after is getting a char * to the contents of a vector, then the expression &v[0] does the trick (v being the vector), as in

std::vector<char> v;
...
fwrite(&v[0],1,v.size(),fp);

Hope this helps.

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

Explorer-like interface

Jerome Conus4-Dec-01 19:40

Jerome Conus

4-Dec-01 19:40

Hi,

I have an SDI 'windows explorer'-like application (generated by the AppWizard), with a left pane (CLeftView) and a right pane (CRightView).
Here are my questions :

- When the user opens a new file, a file selector is automatically openned. How can I choose the file type (*.xxx instead of *.*) ?

- I would like that when the user chooses to save the file, no matter which view is active, the same method is called. But, with the ClassWizard, the function to react to the 'OnCommand' for a menu is different for each view. How can I have a unique method for the 'File save', no matter which view is active ?

Thank you in advance for your help !

Jerome

Re: Explorer-like interface

Ray Kinsella5-Dec-01 1:28

Ray Kinsella

5-Dec-01 1:28

- When the user opens a new file, a file selector is automatically openned. How can I choose the file type (*.xxx instead of *.*) ?

I assume you are using CFileDialog, look at its m_ofn member, this is of type 'OPENFILENAME' structure. The 'OPENFILENAME' has two members you need to modify lpstrFilter and lpstrCustomFilter.

How can I have a unique method for the 'File save', no matter which view is active ?

Create a static function somewhere to do the work, and then call it from everywhere else.

Regards

Ray

"Je Suis Mort De Rire"

Unicode clipboard?

AG4-Dec-01 19:30

4-Dec-01 19:30

Hello,

Is the clipboard in WinNT unicode? ie. can I copy - paste Japanese characters from one editor to another (both editors support unicode) without loss of data or junk characters filling the data?

Regards,
~A.

Re: Unicode clipboard?

Michael Dunn4-Dec-01 19:48

Michael Dunn

4-Dec-01 19:48

Yes.

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While I can't be correct on all matters, I can make the reassuring claim that where I am inaccurate, I am at least definitively inaccurate.
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ActiveX

mazy4-Dec-01 19:07

mazy

4-Dec-01 19:07

I use ATL COM Appwizard to create ActiveX,
I insert new "full controll" and in the "Stock Properties"
tab I add "Background color" and "Background Style".
when I test ActiveX in "ActiveX control text container"
there were not any propertypage for background color and
background style.
Should I add any code for it?

Re: ActiveX

Todd Smith4-Dec-01 20:16

Todd Smith

4-Dec-01 20:16

When you select background color and style the appwizard includes a few more lines of code so that you can set the background color and style from the container.

Create a project with those options enabled and one without and then do a diff (windiff) between the two projects to see the difference.

Todd Smith

Re: ActiveX

Mazdak5-Dec-01 2:58

Mazdak

5-Dec-01 2:58

I could create propertysheet for backcolor but it is
disable and I cann't choose color from it?

How to get user set font point size?

Henry Jacobs4-Dec-01 16:50

Henry Jacobs

4-Dec-01 16:50

How can I find the user defined point size for message boxes (set under Display Properties, Appearance). I have checked GetSystemMetrics and SystemParametersInfo and have tried the following code:

HFONT   font = (HFONT)GetStockObject(SYSTEM_FONT);
LOGFONT lf;
GetObject(font, sizeof(LOGFONT), &lf);

HDC hdc    = GetDC(NULL);
int ptsize = MulDiv(72, lf.lfHeight, GetDeviceCaps(hdc, LOGPIXELSY));
ReleaseDC(NULL, hdc);

SYSTEM_FONT always results in 12 and DEFAULT_GUI_FONT is the menu font.

big font

zecodela4-Dec-01 14:37

zecodela

4-Dec-01 14:37

hi all,
i would like know how i can change the font size in a editbox.
could anyone give me an idea?
thanks,
jim

MFC DLL #2

shadowplayer4-Dec-01 11:07

shadowplayer

4-Dec-01 11:07

I have created a MFC DLL, and everything works fine on the DLL side. But one the application side, the exported classes only work when they are declared in a function, and I have compiling errors when I declare them in a view or another class. What am I doing wrong?

Re: MFC DLL #2

Erik Funkenbusch4-Dec-01 19:07

Erik Funkenbusch

4-Dec-01 19:07

The reason nobody answered your question the first time is because it is too vague to guess at. You need to be more detailed. What errors? What defines are you using? How is your project structured?

Simply reposting your question will achieve the same thing. Nobody answering it.
--
Where are we going? And why am I in this handbasket?

Static Control and lines

Giles4-Dec-01 11:05

Giles

4-Dec-01 11:05

I have a dialog box, and would really like to be able to break some of the items up with a horizontal line which loads of apps do. The static group box control has the right 3d line style, but how do you get a line break of the same kind without drawing directly using the GDI?

Any ideas?

In the past when using VB, I just called the GDI directly, but wished there was an easier way.

Thanks in advance,

Giles

Re: Static Control and lines

Christian Graus4-Dec-01 11:53

Christian Graus

4-Dec-01 11:53

I use Draw3DRect because it does the two colour thing in one line. I guess you could derive a class from CStatic that draws a line if you want to define it in the dialog editor and not draw it yourself.

Christian

After all, there's nothing wrong with an elite as long as I'm allowed to be part of it!! - Mike Burston Oct 23, 2001

Sonork ID 100.10002:MeanManOzI live in Bob's HungOut now

CListCtrl - Hide a column

RobJones4-Dec-01 10:12

RobJones

4-Dec-01 10:12

Hello,
I have been reading a bunch of articles here and at codeguru on hiding a column.. but most of the articles I have read people are reporting side effects.. Does anyone know of a good way to hide a column in a list control (report style)? I don't want the user to be able to open the column (yet I want to store data in it).. If I set the column width to 0 it hides it but it can be easly spread open..

Any ideas?

Rob

Re: CListCtrl - Hide a column

Rashid Thadha4-Dec-01 10:30

Rashid Thadha

4-Dec-01 10:30

If the idea is that you don't want to show a single column, then use
lParam-Parameter of the 'SetItem' function.

If you want to prevent resizing, you have to do the following.

SetColumnWith (ID_COLUMN, 0)

Then override the OnNotity() function to handle the header notification for resizing.

HD_NOTIPY *pHDN = (HD_NOTITY *) lParam
if ((pHDN->hdr.code == HDN_BEGINTRACK) &&
        (pHDN->iItem == mID_MY_COLUMN))
{
    *pResult = 0;
    return TRUE;
}

Re: CListCtrl - Hide a column

RobJones4-Dec-01 11:10

RobJones

4-Dec-01 11:10

Thanks, worked like a charm!!

Rob

Hovering Text

SixString4-Dec-01 9:50

SixString

4-Dec-01 9:50

I'm looking for a way to have text over a transparent background, I'm not sure of which MFC approach to take, dialog box or window?

Any ideas on making text "appear" as if hovering over all other apps/windows would help out greatly!

Thanks

Sending WM_ACTIVATE to CFormView

Jason Hihn4-Dec-01 7:35

Jason Hihn

4-Dec-01 7:35

I want to send an WM_ACTIVATE message to a CFormView. (Basically I want the view to know when the App isn't the app with focus anymore.) I have code for the CMainFrame that catches it.

The app is also a SDI app. The only relationship I see is in theApp.InitInstance where it goes:
CSingleDocTemplate* pDocTemplate;
pDocTemplate = new CSingleDocTemplate(
IDR_MAINFRAME,
RUNTIME_CLASS(CGUIDoc),
RUNTIME_CLASS(CMainFrame), // main SDI frame window
RUNTIME_CLASS(CGUIView));

How can get WM_ACTIVATE from CMainFrame to CGUIView?

Re: Sending WM_ACTIVATE to CFormView

Michael Dunn4-Dec-01 8:04

Michael Dunn

4-Dec-01 8:04

MFC already has this built-in, CView::OnActivateFrame()

--Mike--
http://home.inreach.com/mdunn/
While I can't be correct on all matters, I can make the reassuring claim that where I am inaccurate, I am at least definitively inaccurate.
Heart | [heart]

your

with

and

Sonork - 100.10414 AcidHelm

Re: Sending WM_ACTIVATE to CFormView

Jason Hihn4-Dec-01 8:56

Jason Hihn

4-Dec-01 8:56

I _AM_ an idiot.

Thanks.

en/disable toolbar button

4-Dec-01 7:12

i have been searching the web for info on enabling and disabling a toolbar button but in vain. how can i enable and disable a toolbar button? pls help. thanks a lot.
(my toolbar is declared as m_wndToolBar, and take for example, 1 of the button is declared as ID_COMMAND_PLAY)

Re: en/disable toolbar button

Ravi Bhavnani4-Dec-01 7:27

Ravi Bhavnani

4-Dec-01 7:27

Add an ON_UPDATE_COMMAND_UI handler for the ID_COMMAND_PLAY command.

void CMyClass::OnUpdatePlay (CCmdUI* pCmdUI)
{
  if (playable())  // your test here
     pCmdUI->Enable (TRUE);
}

/ravi

"There is always one more bug..."
ravib@ravib.com
http://www.ravib.com

How to "attach" a CScrollBar to a editbox?

Chambers4-Dec-01 6:35

Chambers

4-Dec-01 6:35

Hi all, I just want to know what the easiest way is to have an edit box (which represents an integer, say width/height) and the arrow buttons, which upon pressing up increments the editbox value by one, and upon pressing down decrements the editbox by one? I have tried mercilessly to do this, but alas I have failed.

Thanks guys,
Alan.

"When I left you I was but the learner, now I am the Master" - Darth Vader Mad | :mad:

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